int
foo (int k)
{
  if (k < 1 || k > 2)
    {
      printf ("out of range\n");
      printf ("this function requires a value of 1 or 2\n");
    }
  else
    {
      printf ("Switching\n");
      switch (k)
    {
    case 1:
      printf ("1\n");
      break;
    case 2:
      printf ("2\n");
      break;
    }
    }
}